Home / 210,940.15-291,082.80-120,299.95

Finding the Fourth Proportional to 210,940.15, 291,082.80 and 120,299.95

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Solution

The fourth proportional to 210,940.15, 291,082.80 and 120,299.95 is: 166,005.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,940.15 : 291,082.80 = 120,299.95 : x
  2. Step 2: Convert to fraction form
    210,940.15/291,082.80 = 120,299.95/x
  3. Step 3: Cross multiply
    210,940.15x = 291,082.80 × 120,299.95
  4. Step 4: Simplify right side
    210,940.15x = 35,017,246,285.86
  5. Step 5: Solve for x
    x = 35,017,246,285.86/210,940.15
  6. Step 6: Final answer
    x = 166,005.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.